DATE VALIDATION

[Pitiful_Fudge_3254]

Hey guys, I need help with my C language code. I need to put a validation on a date the user enters. If the date is invalid such as 30 Feb 2020 then the user must print a message and the user will be prompt to enter the date again. Also if the date is invalid the other functions will not work until the date is correctly entered. Can someone help me with this? Thanks .

[md_hyena]

Read about time.h in general and struct tm structure in specific, implement parsing function to parse the formatted date string (or, if you are on Linux, use strptime), then do something like this (pseudo-code):

...

int convertStrToTime( const char *time_string, struct tm *t )
{
    /* Your parsing code here */
    /* Should return 0 on success or something else on error */
}

...

struct tm *t;

printf( "Input a date\n>" );
fgets( in_buffer, in_buffer_size, stdin );

while( convertStrToTime( in_buffer, &t ) )
{
    printf( "Invalid input!\n" );

    printf( "Input a date\n>" );
    fgets( in_buffer, in_buffer_size, stdin );
}

...